ios - 信标没有发现 iOS
<p><p>我正在尝试发现 ibeacon。我在 iPhone 4s 上运行应用程序。设备蓝牙已打开。信标也在其他 iOS 应用程序中发现。
当我在调用委托(delegate)“centralManagerDidUpdateState”之后搜索服务并且状态为“On”之后没有任何反应。预计应该调用“didDiscoverPeripheral”，但没有任何反应。我在这里做错了什么？</p>
<pre><code>Hi,
import UIKit
import FBSDKLoginKit
import SwiftQRCode
import CoreBluetooth
@objc
class DashboardViewController: UIViewController {
var myCentralManager:CBCentralManager!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
myCentralManager = CBCentralManager(delegate: self, queue: nil)
// let options =
myCentralManager.scanForPeripheralsWithServices(nil, options: nil)
}
override func viewWillAppear(animated: Bool) {
super.viewWillAppear(animated)
self.navigationController?.navigationBar.hidden = true
}
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/
}
// MARK: CBCentralManagerDelegate
extension DashboardViewController: CBCentralManagerDelegate {
func centralManager(central: CBCentralManager, didDiscoverPeripheral peripheral: CBPeripheral, advertisementData: , RSSI: NSNumber) {
peripheral.delegate = self
// if peripheral.state ==CBPeripheralState.Disconnected {
//
// central.connectPeripheral(peripheral, options: nil)
// }
}
func centralManager(central: CBCentralManager, didConnectPeripheral peripheral: CBPeripheral) {
peripheral.delegate = self
peripheral.discoverServices(nil)
}
func centralManager(central: CBCentralManager, didDisconnectPeripheral peripheral: CBPeripheral, error: NSError?) {
}
func centralManager(central: CBCentralManager, didFailToConnectPeripheral peripheral: CBPeripheral, error: NSError?) {
}
}
// MARK: CBCentralManagerDelegate
extension DashboardViewController: CBPeripheralDelegate {
func centralManagerDidUpdateState(central: CBCentralManager) {
switch central.state{
case CBCentralManagerState.PoweredOn:
print("On.")
break
case CBCentralManagerState.PoweredOff:
print("Off.")
break
case CBCentralManagerState.Resetting:
print("Resetting.")
break
case CBCentralManagerState.Unauthorized:
print("Unauthorized.")
break
case CBCentralManagerState.Unknown:
print("Unknown.")
break
case CBCentralManagerState.Unsupported:
print("Unsupported.")
break
}
}
func peripheral(peripheral: CBPeripheral, didDiscoverServices error: NSError?) {
for service in peripheral.services!{
peripheral.discoverCharacteristics(nil, forService: service)
}
}
func peripheral(peripheral: CBPeripheral, didDiscoverCharacteristicsForService service: CBService, error: NSError?) {
for charactristics in service.characteristics!{
peripheral.setNotifyValue(true, forCharacteristic: charactristics)
}
}
func peripheral(peripheral: CBPeripheral, didUpdateNotificationStateForCharacteristic characteristic: CBCharacteristic, error: NSError?) {
if characteristic.isNotifying {
print("Notifying...")
}
}
func peripheral(peripheral: CBPeripheral, didUpdateValueForCharacteristic characteristic: CBCharacteristic, error: NSError?) {
print(characteristic.value)
}
}
</code></pre></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p><strong>无法使用 <code>CoreBluetooth</code> APIs</strong> 和 <code>CBCentralManager</code> 类检测 iBeacons，如代码所示。虽然 iBeacon 是蓝牙 LE 设备，但 <a href="http://developer.radiusnetworks.com/2013/10/21/corebluetooth-doesnt-let-you-see-ibeacons.html" rel="noreferrer noopener nofollow">Apple has security blocks that prevent iOS devices from reading the raw advertisement data</a>使用 <code>didConnectPeripheral</code> 回调。</p>
<p>如果您想在 iOS 上检测 iBeacons，您必须使用 <code>CoreLocation</code> API。您可以阅读有关如何执行此操作的更多信息 <a href="https://developer.apple.com/library/ios/documentation/UserExperience/Conceptual/LocationAwarenessPG/RegionMonitoring/RegionMonitoring.html" rel="noreferrer noopener nofollow">here.</a> </p></p>
<p style="font-size: 20px;">关于ios - 信标没有发现 iOS，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/33451595/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/33451595/
</a>
</p>
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